[Bug middle-end/111632] gcc fails to bootstrap when using libc++

[iains at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111632

--- Comment #26 from Iain Sandoe <iains at gcc dot gnu.org> ---
NOTE: I adjusted the PR lines in the commit header so that the commits get
reflected on the PR.